摘要
茴香酸的分子式为C<sub>8</sub>H<sub>8</sub>O<sub>3</sub>,碳含量63.15%、氢含量5.30%、氧含量31.55%、甲氧基含量20.40%。该标样与日本元素分析恳谈会委员会、英国化学协会微量化学委员会所公布的微量化学标样之一——香草醛一样,都具有相同的碳、氢、氧和甲氧基含量,美国国家标准局（NBS）发行SRM142茴香酸作为微量分析中甲氧基的分析标样。
Anisic acid of L.R. grade was recrystallized from alcohol and was futher refined by zonemelting method. The high purity material thus obtained can be used as a standard referencematerial for determination of carbon, hydrogen,oxygen element and methoxyl group in organicelemental analysis.
